Utterly irrelevant. It works.
The problem with PCR is that it can't be done on the cheap like this because you need fastidious laboratory technique from collection of sample through laboratory handling and to the interpretation of results to ensure that the results are reliable, that you have not contaminated your sample etc.
I am amazed that anyone thought you could make this work with a cheap and quick test.
It DOES NOT WORK. Liar. My wife is a scientist. Bring on your counter arguments. You don’t have any.
You can have your product but you can only choose two - cheap, quick, good.